The Carpathian campaign of 1915, described by some as the Stalingrad of the First World War, engaged the million-man armies of Austria-Hungary and Russia in fierce winter combat that drove them to the brink of annihilation. Habsburg forces fought to rescue 130,000 Austro-Hungarian soldiers trapped by Russian troops in Fortress Przemysl, but the campaign was waged under such adverse circumstances that it produced six times as many casualties as the...